2016 NISSAN NOTE oil pressure

EC-22
< SYSTEM DESCRIPTION >[HR16DE]
COMPONENT PARTS

*: These data are reference values and are measured between ECM terminals.
EVAP Canister Purge Volume Control Solenoid ValveINFOID:0000000012431283
The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.
EVAP Canister Vent Control ValveINFOID:0000000012431284
The EVAP canister vent control
valve is located on the EVAP canis-
ter and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal
the vent is necessary for the on board diagnosis of other evaporative
emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the evapo-
rative emission control system is depressurized and allows “EVAP
Control System” diagnosis.
EVAP Control System Pressure SensorINFOID:0000000012431285
The EVAP control system pressure s ensor detects pressure in the
purge line. The sensor output voltage to the ECM increases as pres-
sure increases.
Engine oil temperature [ °C ( °F)]
Vo l ta g e* (V)Resistance (k
Ω)
–10 (14) 4.4 7.0 - 11.4 20 (68) 3.52.10 - 2.90
50 (122) 2.20.68 - 1.00
90 (194) 0.90.236 - 0.260
110 (230) 0.60.143 - 0.153
SEF012P
JSBIA0651ZZ
PBIB1263E
PBIB3370E
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COMPONENT PARTSEC-23
< SYSTEM DESCRIPTION > [HR16DE]
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Exhaust Valve Timing Control Solenoid ValveINFOID:0000000012431286
Exhaust valve timing control solenoi
d valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The exhaust valve timing control solenoid valve changes the oil
amount and direction of flow through exhaust valve timing control
unit or stops oil flow.
The longer pulse width retards valve angle.
The shorter pulse width advances valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the exhaust valve angle at the control
position.
Fuel InjectorINFOID:0000000012431287
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
Fuel PumpINFOID:0000000012431288
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for a few seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the crankshaft position sensor (POS) and cam-
shaft position sensor (PHASE), it knows that the engi ne is rotating, and causes the pump to operate. If the
engine speed signal is not received when the ignition s witch is ON, the engine stalls. The ECM stops pump
operation and prevents battery discharging, thereby improving safety. The EC M does not directly drive the fuel
pump. It controls the ON/OFF fuel pump rela y, which in turn controls the fuel pump.
JSBIA0652ZZ
JSBIA0742ZZ
SensorInput signal to ECMECM functionActuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Sto ps .
Revision: August 20152016 Versa Note

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COMPONENT PARTSEC-25
< SYSTEM DESCRIPTION > [HR16DE]
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*: These data are reference values and are measured between ECM terminals.
Intake Valve Timing Control Solenoid ValveINFOID:0000000012431293
Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse width advances valve angle.
The shorter pulse width retards valve angle.
When ON and OFF pulse widths become equal, the solenoid valve
stops oil pressure flow to fix the intake valve angle at the control
position.
Knock SensorINFOID:0000000012431294
The knock sensor is attached to t
he cylinder block. It senses engine
knocking using a piezoelectric el ement. A knocking vibration from
the cylinder block is sensed as vibrational pressure. This pressure is
converted into a voltage signal and sent to the ECM.
Battery Current Sensor (With Battery Temperature Sensor)INFOID:0000000012431295
OUTLINE
The power generation voltage variable control enables fuel con-
sumption to be decreased by reducing the engine load which is
caused by the power generation of the generator.
Based on sensor signals, ECM judges whether or not the power
generation voltage variable contro l is performed. When performing
the power generation voltage variable control, ECM calculates the
target power generation voltage based on the sensor signal. And
ECM sends the calculated value as the power generation command
value to IPDM E/R. For the details of the power generation voltage
variable control, refer to CHG-8, "
System Description".
CAUTION:
Never connect the electrical co mponent or the ground wire
directly to the battery terminal. The connection cau ses the malfunction of the power generation volt-
age variable control, and then the battery discharge may occur.
BATTERY CURRENT SENSOR
The battery current sensor is installed to the battery negative cable. The sensor measures the charging/dis-
charging current of the battery.
Intake air temperature [ °C ( °F)] Voltage* (V) Resistance (k Ω)
25 (77) 3.31.800 - 2.200
80 (176) 1.20.283 - 0.359
SEF012P
PBIB1842E
JSBIA0284ZZ
JPBIA3262ZZ
Revision: August 2015 2016 Versa Note

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EC-26
< SYSTEM DESCRIPTION >[HR16DE]
COMPONENT PARTS
BATTERY TEMPERATURE SENSOR
Battery temperature sensor is int
egrated in battery current sensor.
The sensor measures temperature around the battery.
The electrical resistance of the t hermistor decreases as temperature
increases.

*: These data are reference values and are measured between battery temperature
sensor signal terminal and sensor ground.
Malfunction Indicator Lamp (MIL)INFOID:0000000012431296
The MIL is located on the combination meter.
The MIL will illuminate when the ignition switch is turned ON without
the engine running. This is a bulb check.
When the engine is started, the MIL should turn OFF. If MIL remains
ON or continues blinking, the on board diagnostic system detects a
DTC(s) that affects exhaust gas.
For details, refer to EC-57, "
DIAGNOSIS DESCRIPTION : Malfunc-
tion Indicator Lamp (MIL)".
Mass Air Flow SensorINFOID:0000000012431297
The mass air flow sensor (1) is placed in the stream of intake air. It
measures the intake flow rate by measuring a part of the entire
intake flow. The mass air flow sensor controls the temperature of the
hot wire to a certain amount. The heat generated by the hot wire is
reduced as the intake air flows around it. The more air, the greater
the heat loss.
Therefore, the electric current supplied to hot wire is changed to
maintain the temperature of the hot wire as air flow increases. The
ECM detects the air flow by means of this current change.
Oil Pressure Warning LampINFOID:0000000012431298
Oil pressure warning lamp is located on the combination meter.
It indicates the low pressure of the engine oil and the malfunction of
the engine oil pressure system.
Combination meter turns the oil pressure warning lamp ON/OFF
according to the oil pressure warning lamp signal received from
ECM via CAN communication.
For details, refer to EC-43, "
ENGINE PROTECTION CONTROL AT
LOW ENGINE OIL PRESSURE : System Description".
Temperature [°C ( °F)]
Vo l ta g e* (V) Resistance (k
Ω)
25 (77) 3.3331.9 - 2.1
90 (194) 0.9690.222 - 0.258
SEF012P
SAT652J
PBIA9559J
PBIA8559J
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SYSTEMEC-31
< SYSTEM DESCRIPTION > [HR16DE]
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ENGINE CONTROL SYSTEM : System DescriptionINFOID:0000000012431308
ECM performs various controls such as fuel
injection control and ignition timing control.
MULTIPORT FUEL INJECTION SYSTEM
Function Reference
Multiport fuel injection system EC-32, "
MULTIPORT FUEL INJECTION SYSTEM : System De-
scription"
Electric ignition system
EC-35, "ELECTRIC IGNITION SYSTEM : System Description"
Air conditioning cut controlEC-37, "AIR CONDITIONING CUT CONTROL : System Descrip-
tion"
CAN communication
EC-38, "CAN COMMUNICATION : System Description"
Cooling fan control EC-38, "COOLING FAN CONTROL : System Description"
Evaporative emission systemEC-40, "EVAPORATIVE EMISSION SYSTEM : System Descrip-
tion"
Intake valve timing control
EC-41, "INTAKE VALVE TIMING CONTROL : System Description"
Exhaust valve timing control EC-42, "EXHAUST VALVE TIMING CO
NTROL : System Descrip-
tion"
Engine protection control at low engine oil pressure EC-43, "ENGINE PROTECTION CONTROL AT LOW ENGINE
OIL PRESSURE : System Description"
Fuel filler cap warning systemEC-44, "FUEL FILLER CAP WARNING SYSTEM : System De-
scription"
Automatic speed control device (ASCD)
EC-45, "AUTOMATIC SPEED CONTROL DEVICE (ASCD) : Sys-
tem Description"
Active grille shutter systemEXT-11, "ACTIVE GRILLE SHUTTER SYSTEM : System Descrip-
tion"
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2016 Versa Note

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SYSTEMEC-43
< SYSTEM DESCRIPTION > [HR16DE]
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*1: ECM determines the start signal status
by the signals of engine speed and battery voltage.
*2: This signal is sent to the ECM through CAN communication line.
SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the exhaust
valve.
The ECM receives signals such as crankshaft positi on, camshaft position, engine speed, engine oil tempera-
ture and engine coolant temperature. Then, the ECM s ends ON/OFF pulse duty signals to the exhaust valve
timing (EVT) control solenoid valve depending on driving stat us. This makes it possible to control the shut/
open timing of the exhaust valve to increase engi ne torque and output in a range of high engine speed.
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System Dia-
gram
INFOID:0000000012431324
ENGINE PROTECTION CONTROL AT LOW ENGINE OIL PRESSURE : System De-
scription
INFOID:0000000012431325
INPUT/OUTPUT SIGNAL CHART
SYSTEM DESCRIPTION
• The engine protection control at low engine oil pressure warns the driver of a decrease in engine oil pres-
sure by the oil pressure warning lamp a before the engine becomes damaged.
• When detecting a decrease in engine oil pressure at an engine speed less than 1,000 rpm, ECM transmits an oil pressure warning lamp signal to the combination meter. The combination meter turns ON the oil pres-
sure warning lamp, according to the signal.
JPBIA4886GB
JSBIA0704GB
Sensor Input signal to ECM ECM function Actuator
Engine oil pressure sensor Engine pressure Engine protection control
• Oil pressure warning lamp signalCombination meter
• Oil pressure warning lamp
Crankshaft position sensor (POS) Engine speed
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EC-44
< SYSTEM DESCRIPTION >[HR16DE]
SYSTEM
*: When detecting a normal engine oil pressure, ECM turns OFF the oil pressure warning lamp.
FUEL FILLER CAP WARNING SYSTEM
FUEL FILLER CAP WARNING
SYSTEM : System DiagramINFOID:0000000012431326
FUEL FILLER CAP WARNING SYS TEM : System DescriptionINFOID:0000000012431327
INPUT/OUTPUT SIGNAL CHART
Input
*: This signal is sent to the ECM via the CAN communication line.
Output
*: This signal is sent to the combination meter via the CAN communication line.
SYSTEM DESCRIPTION
The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and
malfunction occurrences after refueling, by turning ON the fuel filler cap warning display on the combination
meter.
ECM judges a refueled state, based on a fuel level signal transmitted from the combination meter.
When a very small leak is detected through the EVAP leak diagnosis performed after judging the refueled
state, ECM transmits a fuel filler cap warning display signal (request for display ON) to the combination meter
via CAN communication.
When receiving the signal, the combination meter turns ON the fuel filler cap warning display.
CAUTION:
Check fuel filler cap installation condition when the fuel filler cap warning display turns ON.
Reset Operation
Decrease in engine
oil pressure Engine speed Combination meter
Oil pressure warning lamp
Detection Less than 1,000 rpm
ON*
1,000 rpm or more ON
Unit/Sensor Input signal to ECM ECM function
EVAP control system pressure sensor Pressure in purge line
Fuel filler cap warning control
Combination meter Fuel level
Fuel filler cap warning reset signal
*
JSBIA0797GB
Unit
Output signal Actuator
ECM Fuel filler cap warning display signal
*Combination meter
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ECM
EC-79
< ECU DIAGNOSIS INFORMATION > [HR16DE]
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(W) 40
(L) Knock sensor
Input[Engine is running]
• Idle speed
2.5 V
38
(LG/B) 44
(P) Engine coolant temperature
sensor
Input [Engine is running] 0 - 4.8 V
Output voltage varies with engine
coolant temperature.
39
(L) 68
(R) Battery temperature sensor Input [Engine is running]
• Battery temperature: 25
°C ( °F)
• Idle speed 3.5 V
40
(L) —Sensor ground
(Knock sensor shield circuit) ——
—
42
(L) 51
(P) Fuel tank temperature sen-
sor
Input [Engine is running] 0 - 4.8 V
Output voltage varies with fuel
tank temperature.
43
(SB) 68
(R) EVAP control system pres-
sure sensor
Input [Ignition switch: ON]
0.5 - 4.6 V
44
(P) —Sensor ground
(Engine coolant tempera-
ture sensor) ——
—
45
(G/B) 52
(LG) Mass air flow sensor
Input[Ignition switch ON]
• Engine stopped
0.4 V
[Engine is running]
• Warm-up condition
• Idle speed 0.8 - 1.3 V
[Engine is running]
• Warm-up condition
• Engine is revving from idle to about 4,000 rpm 0.8 - 1.3 to 2.4 V
(Check for linear voltage rise in
response to engine being in-
creased to about 4,000 rpm.)
46
(V) 55
(G/L) Intake air temperature sen-
sor
Input [Engine is running] 0 - 4.8 V
Output voltage varies with intake
air temperature.
47
(Y) 60
(L) Engine oil pressure sensor Input [Engine is running]
• Warm-up condition
• Idle speed
1.0 - 2.0 V
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm 1.5 - 3.5 V
48
(W/R) 63
(W) Ex
haus
t v
alve timing control
position sensor Input[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle 4.3 V
[Engine is running]
• Engine speed: 2,000 rpm 4.3 V
49
(G) 108
(B) A/F sensor 1
Input [Ignition switch: ON] 2.2 V
Terminal No.
Description
ConditionVa l u e
(Approx.)
+ – Signal nameInput/
Output
JSBIA0716GB
JSBIA0717GB
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